The LFU ratio [Formula: see text] in the Standard Model and beyond

We discuss the possibility of performing precise tests of [Formula: see text] universality in [Formula: see text] decays. We show that in wide regions of the dilepton invariant mass spectrum the ratio between muonic and electronic decay widths can be predicted with high accuracy, both within and bey...

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Autores principales: Bordone, Marzia, Cornella, Claudia, Isidori, Gino, König, Matthias
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2021
Materias:
Regular Article - Theoretical Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8550350/
https://www.ncbi.nlm.nih.gov/pubmed/34720727
http://dx.doi.org/10.1140/epjc/s10052-021-09618-3
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author Bordone, Marzia
Cornella, Claudia
Isidori, Gino
König, Matthias
author_facet Bordone, Marzia
Cornella, Claudia
Isidori, Gino
König, Matthias
author_sort Bordone, Marzia
collection PubMed
description We discuss the possibility of performing precise tests of [Formula: see text] universality in [Formula: see text] decays. We show that in wide regions of the dilepton invariant mass spectrum the ratio between muonic and electronic decay widths can be predicted with high accuracy, both within and beyond the Standard Model. We present numerical expressions which can be used to extract precise information on short-distance dynamics if a deviation from universality is observed in the data.
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spelling pubmed-85503502021-10-29 The LFU ratio [Formula: see text] in the Standard Model and beyond Bordone, Marzia Cornella, Claudia Isidori, Gino König, Matthias Eur Phys J C Part Fields Regular Article - Theoretical Physics We discuss the possibility of performing precise tests of [Formula: see text] universality in [Formula: see text] decays. We show that in wide regions of the dilepton invariant mass spectrum the ratio between muonic and electronic decay widths can be predicted with high accuracy, both within and beyond the Standard Model. We present numerical expressions which can be used to extract precise information on short-distance dynamics if a deviation from universality is observed in the data. Springer Berlin Heidelberg 2021-09-25 2021 /pmc/articles/PMC8550350/ /pubmed/34720727 http://dx.doi.org/10.1140/epjc/s10052-021-09618-3 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Funded by SCOAP3
spellingShingle Regular Article - Theoretical Physics
Bordone, Marzia
Cornella, Claudia
Isidori, Gino
König, Matthias
The LFU ratio [Formula: see text] in the Standard Model and beyond
title The LFU ratio [Formula: see text] in the Standard Model and beyond
title_full The LFU ratio [Formula: see text] in the Standard Model and beyond
title_fullStr The LFU ratio [Formula: see text] in the Standard Model and beyond
title_full_unstemmed The LFU ratio [Formula: see text] in the Standard Model and beyond
title_short The LFU ratio [Formula: see text] in the Standard Model and beyond
title_sort lfu ratio [formula: see text] in the standard model and beyond
topic Regular Article - Theoretical Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8550350/
https://www.ncbi.nlm.nih.gov/pubmed/34720727
http://dx.doi.org/10.1140/epjc/s10052-021-09618-3
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